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An Efficient Mobile Video Streaming Rate Selection Technique based on Wireless Network Characteristics

무선망 특성을 고려한 효율적 비디오 스트리밍 재생률 선택 기술

  • Pak, Suehee (Dept. of Computer Science, Dongduk Women's University)
  • Received : 2016.09.12
  • Accepted : 2016.10.17
  • Published : 2017.01.30

Abstract

Explosive deployment of smart mobile devices such as smart phones, and tablets along with expansion of wireless internet bandwidth have enabled the deployment of mobile video streaming such that video traffic becomes the most important service in wireless networks. Recently, for more efficient video streaming services, the ISO MPEG group standardized a protocol called DASH (Dynamic Adaptive Streaming over HTTP) and the standard has been quickly adopted by many service providers such as YouTube and Netflix. Despite of the convenience of mobile streaming services, users also suffer from low QoE(Quality of Experience) due to dynamic channel fluctuations and unnecessary downloading due to high churning rates. This paper proposes a noble efficient video rate selection algorithm considering user buffer level, channel condition and churning rate. Computer simulation based performance study showed that the proposed algorithm improved the QoE significantly compared to a method that determines the video rate based on current channel conditions. Especially, the proposed method reduced the rebuffering rate, one of the most important performance factors of the QoE, to a nonnegligible level.

Keywords

Acknowledgement

Supported by : Dongduk Women's University

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